<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="10">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList()">
            <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">
            添加用户
          </el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <!-- {{scope.row.mg_state}} -->
            <el-switch
              v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <!-- 操作栏 -->
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[5, 10, 15, 20]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
      </el-pagination>  

      <!-- 添加用户对话框 -->
      <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClose"
        >
        <!-- 内容主题区 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 修改用户对话框 -->
      <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
        >
        <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="70px">
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机号" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 分配角色对话框 -->
      <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClose()"
        >
        <div>
          <p>当前的用户: {{userInfo.username}}</p>
          <p>当前的角色: {{userInfo.role_name}}</p>
          <p>分配新角色: 
            <el-select v-model="seletedRoleId" placeholder="请选择">
              <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo()">确 定</el-button>
        </span>
      </el-dialog>

    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule,value,callback) =>{
      // 验证邮箱的正则表达式
      const regEmail = /^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/
      if (regEmail.test(value)) {
        return callback()
      }else{
        callback(new Error('请输入合法的邮箱'))
      }
    }
    // 验证手机号的规则
    var checkMobile = (rule,value,callback) =>{
      const regMobile = /^1[0-9]{10}$/
      if (regMobile.test(value)) {
        return callback()
      }else{
        callback(new Error('请输入合法的手机号'))
      }
    }
    return {
      // 获取用户列表的参数对象
      queryInfo:{
        query:'',
        // 当前的页数
        pagenum:1,
        // 显示多少条数据
        pagesize:5
      },
      // 用户数据
      userlist:[],
      // 一共拥有多少个用户
      total:0,
      // 控制添加用户对话框的显示和隐藏
      addDialogVisible:false,
      // 添加用户的表单数据
      addForm:{
        username:'',
        password:'',
        email:'',
        mobile:''
      },
      // 添加用户的表单数据验证对象
      addFormRules:{
        username:[
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 5, max: 10, message: '长度在 5 到 10 个字符', trigger: 'blur' }
        ],
        password:[
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email:[
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {validator:checkEmail, trigger: 'blur' }
        ],
        mobile:[
          { required: true, message: '请输入手机', trigger: 'blur' },
          {validator:checkMobile, trigger: 'blur' }
        ]
      },
      // 修改用户对话框的显示与隐藏
      editDialogVisible:false,
      // 查询到的用户信息对象
      editForm:{},
      // 分配角色对话框显示与隐藏
      setRoleDialogVisible:false,
      // 需要被分配角色的用户信息
      userInfo:{},
      // 所有角色的数据列表
      rolesList:{},
      // 已选中的角色id值
      seletedRoleId:''

    }
  },
  created() {
    // 获取角色信息
    this.getUserList()
  },
  methods: {
    // 获取用户数据
    async getUserList(){
      const {data:res} = await this.$http.get('users',{
        params : this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户信息失败！！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变事件
    handleSizeChange(newSize){
      // console.log(newSize);
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变事件
    handleCurrentChange(newPage){
      // console.log(newPage);
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 修改状态发送请求
    async userStateChange(userinfo){
      // console.log(userinfo);
      const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户信息失败')
      }
      this.$message.success('更新用户状态成功')
    },
    // 监听添加用户对话框关闭事件
    addDialogClose(){
      // 清除表单数据
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser(){
      this.$refs.addFormRef.validate(async valid =>{
        if (!valid) {
          return
        }else{
          const {data:res} = await this.$http.post('users',this.addForm)
          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败！')
          }else{
            this.$message.success('添加用户成功！')
            this.addDialogVisible = false
            this.getUserList()
          }
        }
      })
    },
    // 展示编辑用户对话框
    async showEditDialog(id){
      // console.log(id);
      const {data:res} = await this.$http.get(`users/${id}`)
      if (res.meta.status !== 200) {
        this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
      // console.log(this.editForm);

    },
    // 监听修改对话框的关闭事件
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    // 修改页面提交
    editUserInfo(){
      this.$refs.editFormRef.validate(async (valid)=>{
        if (!valid) {
          return
        }else{
          // 发起修改用户信息的数据请求
          const {data:res} = await this.$http.put(`users/${this.editForm.id}`,{
            email:this.editForm.email,
            mobile:this.editForm.mobile
          })

          if (res.meta.status !== 200) {
            return this.$message.error('修改失败')            
          }

          // 关闭对话框
          this.editDialogVisible = false
          // 刷新数据列表
          this.getUserList()
          // 提示修改成功
          this.$message.success('修改用户信息成功')     
        }
      })
    },
    // 根据id删除对应的用户信息
    async removeUserById(id){
      // 弹框询问用户是否删除数据
      const resStr = await this.$confirm('此操作将永久删除此账户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err =>{
        return err
      })
      // 如果用户确认删除，则返回值为字符串confirm
      // 如果用户取消了删除，则返回值为字符串cancel
      // console.log(resStr);
      if (resStr !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      // console.log('确认删除');
      const {data:res} = await this.$http.delete(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
        this.$message.success('删除成功')
        
        // 刷新数据列表
        this.getUserList()

    },
    // 展示分配角色对话框
    async setRole(userInfo){
      this.userInfo = userInfo

      // 在展示对话框之前 请求所有角色列表
      const {data:res} = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data
      // console.log(this.rolesList);

      this.setRoleDialogVisible = true
    },
    // 分配角色对话框提交
    async saveRoleInfo(){
      // console.log(this.seletedRoleId);
      if (!this.seletedRoleId) {
        return this.$message.error('选择要分配的角色')
      }

      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.seletedRoleId})


      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }

      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false

    },
    // 监听分配角色对话框关闭事件
    setRoleDialogClose(){
      this.seletedRoleId =""
      this.userInfo=""
    }
  },
}
</script>

<style lang="less" scoped>

</style>